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A181199 as a simple table

na(n)
11
21
316
4985
5141696
636372976
714083834704
87372392431849
94848332563899256
103808369342900073856
113447336241467721584256
123503140094024746011745456
133918646197894288330216058576
144753102567048482059557067412816
156178133154985813161258658378449616

[1,1,16,985,141696,36372976,14083834704,
 7372392431849,4848332563899256,
 3808369342900073856,3447336241467721584256,
 3503140094024746011745456,
 3918646197894288330216058576,
 4753102567048482059557067412816,
 6178133154985813161258658378449616]